Quote:
Originally Posted by Keith Seymore
Different transmission part numbers were released with internal gearing to accommodate tire and (more so) rear axle ratio options.
In some cases an external adapter was also used, as in the case of my '87 (it used the "Z" shaped version).
K
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The parts books have tables with the drive and driven gears for the speedometer
They're based on the axle rato, transmission/transfer-case, and tire size.
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1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8
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